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We are building a mobile robot using the Handy Board and we desperately need help. To read into the sensors, we are programming using Interactive-C interupts. Would this be a good idea, and if so how do you do it as we are not quite sure. Are there (...) (27 years ago, 8-Dec-97, to lugnet.robotics.handyboard)
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| | Re: tracking an IR beacon
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The phase difference seen by the sensors would be tiny at any practical frequency. Assume that you have the sensors a distance, D, apart and facing 'forward' on the robot. If there is a transmitting source at 90 degrees to the forward direction, the (...) (27 years ago, 8-Dec-97, to lugnet.robotics.handyboard)
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| | Re: tracking an IR beacon
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(...) I confirm what David is saying! Once i worked on some kind of beacon using an PLL to find its frequency (we used a lm567) and it couldn't work properly due to the response time of the PLL. An alternate solution was to replace the PLL by a (...) (27 years ago, 7-Dec-97, to lugnet.robotics.handyboard)
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| | Re: tracking an IR beacon
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(...) Hmmm...mmm... welllll.. if you are planning to use the GPUI series or equiv. as your detectors.. I think you may run into problems with attempting to detect critical time information about the modulated waverform. Namely, and I'm no expert on (...) (27 years ago, 7-Dec-97, to lugnet.robotics.handyboard)
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| | IR Disturbance?
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Hi, I'm trying to do the Trinity College contest for my science project. I'm using IR reflectance sensors to navigate the walls. But when I tried with the candle the robot went haywire. I think it's due to the IR eminating from the candle. How can I (...) (27 years ago, 6-Dec-97, to lugnet.robotics.handyboard)
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